Security Resilience

CVE-2023-46474

Sigb Pmb ≤ 7.5.3

Public PoC
Published
11 January 2024
Modified
09 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 7.2
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.21 98th percentile
Risk Priority 78 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-46474 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Sigb Pmb. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SI-3 (Malicious Code Protection) and CM-7 (Least Functionality) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-46474 is an unrestricted file upload vulnerability in PMB version 7.4.8. The flaw resides in the start_import.php component and is tracked under CWE-434. An authenticated user can upload a crafted PHP file that the application fails to sanitize or restrict by type, enabling subsequent execution of attacker-controlled code on the server.

An attacker with administrative credentials can exploit the issue over the network to achieve arbitrary code execution and privilege escalation. The CVSS 7.2 score reflects the high impact on confidentiality, integrity, and availability once the malicious file is processed, although exploitation requires prior high-privileged access.

Public references include a proof-of-concept repository demonstrating the upload sequence. The current EPSS of 0.7269 indicates sustained exploitation interest since disclosure, with no material rise from a lower baseline observed. No vendor advisory or patch information is provided in the listed references.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

File Upload vulnerability PMB v.7.4.8 allows a remote attacker to execute arbitrary code and escalate privileges via a crafted PHP file uploaded to the start_import.php file.

CWE(s)
CWE-434

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
attack.mitre.org →
T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-52154Same product: Sigb Pmb
CVE-2025-0471Same product: Sigb Pmb
CVE-2025-0472Same product: Sigb Pmb
CVE-2023-24734Same product: Sigb Pmb
CVE-2025-48744Same product: Sigb Pmb
CVE-2025-0473Same product: Sigb Pmb
CVE-2023-24737Same product: Sigb Pmb
CVE-2023-24733Same product: Sigb Pmb
CVE-2023-51828Same product: Sigb Pmb
CVE-2023-53982Same product: Sigb Pmb

Affected Assets

sigb
pmb
≤ 7.5.3

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.1.1

Mitigating Controls (NIST 800-53 r5) AI

SI-3 Malicious Code Protection good match

Malicious-code protection at entry points blocks dangerous file types from being accepted and executed.

CM-7 Least Functionality partial match

Least functionality restricts the file types and automatic processing capabilities the system will accept.

SC-18 Mobile Code partial match

Mobile-code controls define, authorize, and block unacceptable uploaded code before automatic processing occurs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 partial match
blocks

Hardened configuration baselines can enforce allowed file types and processing rules.

PR.PS-05 partial match
blocks

Restricting execution of unauthorized software directly blocks dangerous uploaded files from running.

PR.PS-06 partial match
blocks

Secure development practices include input validation and file-type restrictions that prevent this weakness.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.5.25 Assessment and decision on information security events partial match
removes

References